Question

If U={1 2 3 4 5 ... 10} A={1 2 3 4 5} A Delta B={1 2 3 4} then n(B-A) is (1) 4 (2) 2 (3) 1 (4) Zero
only give explanation I know answer is 4) Zero but why​

Answer 1

Answer:

4) Zero

Step-by-step explanation:

Here,

A={1 2 3 4 5}

B={1 2 3 4}

U={1 2 3 4 5 ... 10}

therefor, n(A) = 5

n(B) = 4

n(U) = 10

B-A = 0

So, n(B-A) = 0

SO, your answer is =4) Zero

It may help you.............